Measurement of spin-exchange rate constants between {sup 129}Xe and alkali metals

Journal Article · Mon Aug 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.022713· OSTI ID:20718133

Wenjin, Shao; Guodong, Wang; Hughes, Emlyn W ^[1]

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1. Department of Physics, Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, California 91125 (United States)

By measuring the relaxation rates of the nuclear spin polarization of {sup 129}Xe in the presence of alkali-metal vapor at different densities, we have extracted the spin-exchange rates between {sup 129}Xe and the three alkali metals K, Rb, and Cs. By studying the alkali-metal-{sup 129}Xe spin-exchange rates as functions of the cell number density from 0.2 to 0.7 amagat, the binary collision and van der Waals molecular terms are separated, and constants governing both mechanisms are determined. The results from our work can be used to optimize the parameter space for polarizing {sup 129}Xe, a promising agent for magnetic resonance imaging and other applications.

• OSTI ID: 20718133
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CESIUM
DENSITY
MAGNETIC RESONANCE
NMR IMAGING
OPTICAL PUMPING
POLARIZATION
POTASSIUM
RUBIDIUM
SPIN EXCHANGE
SPIN ORIENTATION
SPIN-SPIN RELAXATION
VAN DER WAALS FORCES
VAPORS
XENON
XENON 129